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四川省“长治”第一期小流域综合防治成效与经验代华龙（四川省水土保持委员会办公室）四种地处青藏高原与长江中下游平原之间的过渡地带，幅员面积约５７万平方公里。除川西北草地的黑河、白河流域１万多平方公里属黄河流域外，其余地区均属长江流域。全省水土流失面积为...
Achievements and Experiences of Comprehensive Prevention and Control of the First Stage Small Watershed of “Changzhi” Project in Sichuan Province Daiwa Long (the office of Sichuan Provincial Soil and Water Conservation Commission) There are four kinds of transitional zones located between the Qinghai-Tibet Plateau and the plains of the middle and lower reaches of the Yangtze River, covering an area of about 570,000 square kilometers. Except for the Heihe and Baihe basins in the western Sichuan grassland of over 10,000 square kilometers belonging to the Yellow River basin, the remaining areas belong to the Yangtze River basin. The province’s soil erosion area is ...